Equipment
• Recognized as Hungary's Excellent Research Infrastructure (Top 50) by the National Research, Development and Innovation Office in 2021, our laboratory operates several wind tunnels, most importantly a 2.6 m-diameter closed-return wind tunnel with wind velocity up to 55 m/ s.
• Our flow instrumentation includes time-resolved Particle Image Velocimetry, 2D Laser-Doppler Velocimetry, simultaneous multi-channel pressure, and multi-component force measurement systems, some of which are in-house developments.
• The lab also offers development of custom-built test rigs/facilities for the fluid dynamic study of industrial processes, components, systems.
• For the localization of noise sources, we can apply Phased-Array-Microphone systems and other acoustic instruments.
• Our general metalworking and modeling workshop excels in preparing wind tunnel models and test rigs.
Potential purposes of experimentation
• Wind tunnel testing of buildings & structures - determination of structural and cladding wind load, wind comfort studies, static and dynamic test of bridges
• Wind tunnel testing of environmental flows
• Testing of flow and thermal conditions in vehicle components/subsystems, batteries etc.
• Measurements in fluid machines and system components
• Acoustic measurements for noise reduction, noise source localization
• Sport aerodynamics: measurement of aerodynamic forces in cycling and swimming
Services for external users
- Research availability
- Commercial availability (industrial applications)
- Training availability
Relevant publications
-Balla, Estella; Vad, János: Models for Estimation of Lift and Drag Coefficients for Low-Reynolds-Number Cambered Plates AIAA JOURNAL 60 : 12 pp. 6620-6632. , 13 p. (2022) https://doi.org/10.2514/1.J061579
- Benedek, Tamás; Vad, János ; Lendvai, Bálint: Combined acoustic and aerodynamic investigation of the effect of inlet geometry on tip leakage flow noise of free-inlet free-exhaust low-speed axial flow fans APPLIED ACOUSTICS 187 Paper: 108488 , 15 p. (2022)
https://doi.org/10.1016/j.apacoust.2021.108488
- Lukács, Eszter ; Vad, János: A passive loss reduction method of square-to-square sudden expansions ENERGY AND BUILDINGS 266 : p. 112113 Paper: 112113 (2022)
https://doi.org/10.1016/j.enbuild.2022.112113
- Papp, Bálint; Kristóf, Gergely ; Istók, Balázs ; Koren, Márton ; Balczo, Márton ; Balogh, Miklós: Measurement-driven Large Eddy Simulation of dispersion in street canyons of variable building height JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS 211 Paper: 104495, 16 p. (2021) https://doi.org/10.1016/j.jweia.2020.104495
-Daku, Gábor, Vad, János: Experiment-Based Preliminary Design Guidelines for Consideration of Profile Vortex Shedding From Low-Speed Axial Fan Blades. ASME. J. Turbomach. 143(6), 2021. https://doi.org/10.1115/1.4050392
-Tomor, András; Kristóf, Gergely: Hydraulic Loss of Finite Length Dividing Junctions JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 139 : 3 Paper: 031104, 11 p. (2017)
https://doi.org/10.1115/1.4034876
- Benedict, T; Vad, J: An industrial on-site methodology for combined acoustic-aerodynamic diagnostics of axial fans, involving the Phased Array Microphone technique INTERNATIONAL JOURNAL OF AEROACOUSTICS 15: 1-2 pp. 81-102. , 22 p. (2016)
https://doi.org/10.1177/1475472X16630849
- Wild, J; Horváth, Cs ; Kovács, JG: Aerodynamic and aero-acoustic improvement of electric motor cooling equipment PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY 228 : 3 pp. 300-316. , 17 p. (2014)
https://doi.org/10.1177/0957650913517678
- Balczo, M ; Balogh, M ; Goricsan, I ; Nagel, T; Suda, J.; Lajos, T: Air quality around motorway tunnels in complex terrain - computational fluid dynamics modeling and comparison to wind tunnel data WEATHER / QUARTERLY JOURNAL OF THE HUNGARIAN METEOROLOGICAL SERVICE 115 : 3 pp. 179-204. , 26 p. (2011)
https://www.webofscience.com/wos/woscc/full-record/000295329400004
Achievements
• Wind tunnel testing expertise of more than 50 years in wind loading of buildings, structures and structural elements (tall buildings, stadia, towers, bridges, cladding elements, solar panels)
• Development of high-efficiency axial fan product families in cooperation with industrial partners, noise reduction and improvement of flow machinery
• Fluid dynamics testing of vehicle components/subsystems, including the design and manufacture of test rigs/facilities.
• Development of flow instrumentation: handheld manometer, multi-channel pressure measurement systems, multi-hole probes, new types of air quality /environmental sensors
References and partners
BIM Design, CORDIA Global, DAAL-CON, Flowserve Hungary Services, GE Hungary, Hungaroventilátor, KÉSZ Group, Knorr-Bremse, MÁV (Hungarian State Railways), MOL, MVM Paks Nuclear Power Plant, Napur Architects, National Sports Centers, NIF, Span Systems, Terran Roof Tiles, UNITEF'83, Wienerberger, Zippsafe
